Remove redundant install-test job from CI workflow

The install-test job was removed from the GitHub Actions workflow because it duplicated functionality already provided by the main test job. This simplifies the workflow and reduces unnecessary runs across multiple operating systems.

Also fixed a quoting issue with the install prefix on Windows.

Author: sean-parent

templates/.github/workflows/ci.yml.in

@@ -53,18 +53,6 @@ jobs:
       - name: Test
         run: ctest --preset=test
 
-  install-test:
-    name: Test Installation (${{ matrix.os }})
-    runs-on: ${{ matrix.os }}
-    needs: test
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-
-    steps:
-      - uses: actions/checkout@v5
-
       - name: Build and Install
         run: |
           cmake --preset=default
@@ -89,7 +77,7 @@ jobs:
           EOF
 
           # Convert paths to forward slashes for CMake (works on all platforms)
-          INSTALL_PREFIX=$(echo "${{ runner.temp }}/install" | sed 's|\\|/|g')
+          INSTALL_PREFIX=$(echo '${{ runner.temp }}/install' | sed 's|\\|/|g')
 
           # Test find_package with CMAKE_PREFIX_PATH
           cmake -B build -S . -DCMAKE_PREFIX_PATH="${INSTALL_PREFIX}"